Pregnancy lasts about 40 weeks from the first day of your last period. It is divided into three trimesters, each of which is characterized by different stages of fetal development and changes in the mother's body. The pregnancy calendar below will help you track these changes week by week.
First Trimester (Weeks 1-12)
Week 1-4
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Fetal Development:
- Fertilization and implantation of the embryo in the uterus.
- Beginning of formation of basic body structures such as the heart, brain, and spine.
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Mother's symptoms:
- Delayed menstruation.
- Mild implantation cramping and spotting.
- Fatigue and increased sleepiness.
Week 5-8
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Fetal Development:
- The heart starts beating.
- The foundations of limbs, fingers, and internal organs are formed.
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Mother's symptoms:
- Nausea and vomiting (morning sickness).
- More frequent urination.
- Breast tenderness and swelling.
Week 9-12
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Fetal Development:
- The fetus begins to resemble a little human being.
- Development of senses such as sight and hearing.
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Mother's symptoms:
- Nausea is reduced, although it may still occur.
- Increased appetite.
- Mood changes and emotional swings.
Second Trimester (Weeks 13-26)
Week 13-16
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Fetal Development:
- The fetus begins to move, although the mother may not feel it yet.
- Formation of hair, nails and skin.
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Mother's symptoms:
- Reduce fatigue and improve energy.
- The ability to feel your baby's first movements (so-called "breakthrough").
Week 17-20
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Fetal Development:
- Muscle and bone development.
- The fetus can respond to external sounds.
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Mother's symptoms:
- Abdominal enlargement.
- The baby's movements become more noticeable.
- Skin changes such as discoloration or stretch marks.
Week 21-24
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Fetal Development:
- The fetus begins to breathe with lungs, although they are still immature.
- Development of the nervous and muscular systems.
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Mother's symptoms:
- Increased baby activity in the belly.
- Increased caloric needs.
- Trouble sleeping due to discomfort.
Week 25-26
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Fetal Development:
- The fetus begins to explore the world through its senses.
- Development of adipose tissue.
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Mother's symptoms:
- Shortness of breath and increased strain on the heart.
- More frequent muscle cramps.
- Increased feeling of heat and sweating.
Third Trimester (Weeks 27-40)
Week 27-30
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Fetal Development:
- The fetus develops regular sleep and wake cycles.
- Strengthening muscles and bones.
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Mother's symptoms:
- Increased back pain.
- Breathing problems due to pressure on the diaphragm.
- Increased emotional sensitivity.
Week 31-34
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Fetal Development:
- The lungs are in the maturation phase.
- The fetus prepares for birth by changing position in the uterus.
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Mother's symptoms:
- Difficulty moving.
- Increased frequency of urination.
- Swelling of the legs and feet.
Week 35-40
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Fetal Development:
- The fetus reaches full maturity.
- Collection of fat under the skin for thermoregulation after birth.
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Mother's symptoms:
- Regular Braxton-Hicks contractions.
- Lower back pain.
- A feeling of constant heaviness in the lower abdomen.
Advice for the Whole Pregnancy
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Regular Doctor Visits:
- Monitoring maternal health and fetal development.
- Early detection of possible complications.
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Healthy Diet:
- Eating balanced meals rich in vitamins and minerals.
- Avoiding raw foods and alcohol.
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Physical Activity:
- Regular, moderate exercise, such as walking or prenatal yoga.
- Avoiding intense training and contact sports.
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Rest and Relaxation:
- Getting enough sleep.
- Relaxation techniques such as meditation or deep breathing.
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Education:
- Reading literature about pregnancy and childbirth.
- Participating in courses preparing for the role of parent.
Summary
Pregnancy is a unique time full of changes and challenges. Following a weekly pregnancy calendar will help you understand what is happening with your body and your developing baby. Remember that every pregnancy is different, so it is important to consult your doctor regularly and take care of your physical and emotional health.
